The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 26, 2002
Filed:
Apr. 19, 2001
Shyh-Dar Lee, Hsinchu Hsien, TW;
Chen-Chiu Hsue, Hsinchu, TW;
Silicon Intergrated Systems Corp., Hsin Chu, TW;
Abstract
A dual damascene process is applied on a semiconductor substrate having a dual damascene opening with a via hole which exposes a metal wire and is surrounded by a first low-k dielectric layer, and a trench which is over the via hole and surrounded by a second low-k dielectric layer. An in-situ oxide liner, serving as a dielectric barrier layer, is formed on the sidewall of the first low-k dielectric layer and the second low-k dielectric layer. A metal barrier layer is conformally deposited on the exposed surface of the semiconductor substrate to cover the sidewall and bottom of the dual damascene opening. The dual damascene opening is filled with a conductive layer, and then the excess conductive layer outside the trench level is polished away by a CMP process.